Only very small (toy) breed dogs or puppies younger than six months should be litter box trained. Medium or large dogs have large amounts of urine and feces, both of which are very smelly. The amount of litter needed to soak it all up would be very heavy to put into the trash. And the cost of the amount of litter needed per week would be prohibitive.
Use the proper schedule for housetraining, but use the litter box as his “potty place” and take his to it every couple of hours. Always praise him if he potties there.Litter box is ideal for elderly owners, home alone dogs and toy breeds. However, it sometimes can be a hassle and it costs money.
While housetraining a puppy you need to help your dog relate to the designated place of elimination. With positive verbal commands you can make that happen. To make your pet respond during elimination, select the commands you are going to use. If you are using 'do it here' or 'potty-time', then stick to the single command. Different commands each day will only confuse your dog.
When your dog 'accidentally' eliminates at a wrong place or attempts to, you can use commands like 'freeze', 'hold it' or even a firm 'no'. These are positive reinforcements. After the spoken command you can pick up your dog and take him to his potty-place.
For alternative methods on potty training your dog, look up Page 12 for Housetraining Your Dog – A Definitive Guide e-book.